the length and breadth of a playground are 75 m and 45 m respectively. how long will a boy take to go four times around the field if he walks 2 m per second?
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Answer: The correct answer is 6 minutes.
Step-by-step explanation:
Given length = 75 m and breadth = 45m.
perimeter of the playground = 2(75 + 45)
= 2(120)
= 240.
If the distance covered in 1 round = 240m then for 3 round it will take 240 * 3 = 720 m.
Given, he worked at the rate of 2m/sec.
= 720/2
= 360 sec
= 6 minutes.
ankit8947:
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where?
Answered by
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time = total distance travelled / speed
total distance = 4*perimeter of playground
d = 4*2(75+45)
d = 960 m
so time = 960/2
time = 480 sec
= 480/60 = 7min
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total distance = 4*perimeter of playground
d = 4*2(75+45)
d = 960 m
so time = 960/2
time = 480 sec
= 480/60 = 7min
hope u like it
follow me
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